Some very good coins out there have lost 95% of their value already is it possible to see more down fall? I'm throwing this to those that are present in last bear market, marketcap and volume is over millions of dollars and price is 95% down? 
:I downfall still possible? For example Metahero.
:I downfall still possible? For example Metahero.it seems impossible to fall again, because I see that the price of Bitcoin is slowly recovering, so that indicates that soon the price of altcoin will also recover, so I think for now the price of altcoin will not fall again and will instead slowly increase, therefore if you haven't invested in altcoin, so now is the right time for you to invest in altcoin (I recommend top 500 on coinmarketcap).
the OP is talking about alts and not bitcoin. he made an example, Metahero. for me, if you are talking about alts, the possibility of downfall is always there especially for projects with weak developments.